Scale of mineral hardness
62The softest and hardest minerals
This hub will tell you the softest and hardest minerals according to the Mohs scale of mineral hardness which was created in 1812 by the German mineralogist Friedrich Mohs.
Scale of mineral hardness
Hardness
| Mineral
| Uses
|
|---|---|---|
1
| Talc
| Talcum powder.
|
2
| Gypsum
| Plaster ingredient.
|
3
| Calcite
| In limestone.
|
4
| Fluorite
| Prevents tooth decay.
|
5
| Apatite
| Fertilizers.
|
6
| Orthoclase
| Gemstones.
|
7
| Quarts
| Gemstones.
|
8
| Topaz
| Gemstones.
|
9
| Corundum
| Gemstones, cutting tools.
|
10
| Diamond
| Used in jewelery.
|
Talc
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Gypsum.
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Gypsum.
Gypsum has a large variety of uses. These include:
- Plaster ingredient.
- Plaster of paris.
- Blackboard chalk.
Calcite.
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Calcite.
Calcite is a common constituent of sedimentary rocks, limestone in particular, much of which is formed from the shells of dead marine organisms. Approximately 10% of sedimentary rock is limestone.
Fluorite.
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Fluorite.
Fluorite is used instead of glass in some high performance telescopes and camera lens elements.
Apatite.
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Apatite.
Apatite is a mineral used in fertilizers.
Orthoclase.
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Orthoclase.
Orthoclase is used in gemstones.
Quartz.
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Quartz.
Quartz is used as gemstones and jewelery.
Topaz.
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Topaz.
Topaz is used as gemstones and jewelery.
Corundum.
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Corundum.
Corundum is used for gemstones and cutting tools.
Diamond.
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Diamond
Diamond is used for jewelery.
